91406375 has 8 divisors (see below), whose sum is σ = 114075312. Its totient is φ = 73125000.

The previous prime is 91406363. The next prime is 91406387. The reversal of 91406375 is 57360419.

It is an interprime number because it is at equal distance from previous prime (91406363) and next prime (91406387).

It is not a de Polignac number, because 91406375 - 2¹² = 91402279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365501 + ... + 365750.

It is an arithmetic number, because the mean of its divisors is an integer number (14259414).

Almost surely, 2^91406375 is an apocalyptic number.

91406375 is a deficient number, since it is larger than the sum of its proper divisors (22668937).

91406375 is an equidigital number, since it uses as much as digits as its factorization.

91406375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731266 (or 731256 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 91406375 is about 9560.6681251887. The cubic root of 91406375 is about 450.4626928176.

The spelling of 91406375 in words is "ninety-one million, four hundred six thousand, three hundred seventy-five".